Grammarly

At a glance

Official website

https://www.grammarly.com

Category

AI Writing & Chat

Free plan

$0/month, no card; real-time spelling, grammar, and punctuation checking, tone detection, and 100 AI prompts/month.

Free plan limits

No full-sentence rewrites, tone adjustment, fluency suggestions, plagiarism checker, or AI-text detector on Free — all Pro. Free AI allowance is exactly 100 prompts/month (2,000 on Pro).

Paid plans from

From $12/month billed annually ($144/year); $30/month billed monthly — Pro plan.

Best for

Students, professionals, and non-native English writers who want every email and document checked as they type.

Grammarly review: what the free plan really gives you

Grammarly is a writing assistant that works where you already write: in the browser extension, the desktop and mobile apps, and Grammarly's own editor. It checks spelling, grammar, and punctuation as you type, flags tone so you can see how a message is likely to read, and offers a monthly allowance of AI prompts for generating or improving text. Unlike the chatbots in this hub, it does not ask you to open a separate app and paste your writing in; it sits inside your email, your documents, and your social posts, and corrects you in place. That difference is why it belongs here: for many people, a checker that follows them everywhere is more useful than a chatbot they have to remember to visit.

The free plan costs nothing a month and needs no card. The core is the real-time checker — spelling, grammar, punctuation, and tone detection — which is genuinely free and works on everything you type. The AI side is capped at exactly 100 prompts a month for text generation, against 2,000 on Pro, so the free plan is generous for correction and modest for generation. If you mostly need your writing cleaned up, the free plan may be all you ever need; if you want the AI to write drafts for you every day, a hundred prompts will run out.

The boundary between free and paid is clearly drawn, which is refreshing after the vague caps elsewhere in this hub. Full-sentence rewrites, tone adjustment, fluency suggestions, the plagiarism checker, and the AI-text detector are all Pro-only, so free users get correctness, not style. There is no watermark, and commercial use is allowed under Grammarly's terms, with no free-plan commercial ban stated, so work emails and client documents are fine.

Compared with ChatGPT or Claude, Grammarly does one job — making the writing you already produce cleaner — and does it everywhere, while the chatbots do many jobs in one window. It is a complement to a chatbot rather than a replacement: draft in ChatGPT, polish in Grammarly, or just let Grammarly catch the errors in everything you type all day. It suits students, professionals, and anyone writing in a second language who wants a safety net under every sentence. Pro starts at $12 a month billed annually, or $30 a month billed monthly, with a seven-day free trial, no payment today, and an email reminder two days before the trial ends.

Pros and cons

Alternatives to Grammarly

If Grammarly does not fit, these tools in the same category are also listed on AI Free List:

• ChatGPT
• Claude
• Google Gemini

Frequently asked questions